NOQUEUE: reject: RCPT from unknown[10.1.10.8]: 554 5.7.1

Hi all, Newbie to Zimbra, but love it.
I did a new install and we can send and receive emails fine via the admin panels.
I am in the process of setting up the girls desktop to use Outlook and can receive fine, but will not send. In the log files I am seeing this every time I try to send via Outlook.

I know it has something to so with a setting in the admin, but what would I need to do to allow all ip(s) from lets say 10.1.10.1 to 10.1.10.1.100? On the network where we have local machines that will be sending via Outlook and their ip(s) range let's say from 10.1.10.2 to 10.1.10.20? I would like to know where in the GUI admin I need to fix this problem (really not a problem, but a setting) to allow for sending out of Outlook.

Forgot to mention that my MTA Trust networks in the Admin under server is currently set to 127.0.0.0/8 75.149.178.0/24

Well if this is correct, then can you tell me why I am unable to send emails via Outloook? And those are the errors I am getting. That 10.1.10.08 ip address is a machine that we have within the local network that I tested the send from.

You need to modify the mynetworks setting to have the LAN in there and you also need to have a Split DNS set-up (do you) for your server to send email. Once those settings have been made and you set-up your Outlook clients to send via the correct Submission port 587 (and also authenticate) you should have no problems.

Bill, thanks so much for your speedy replies. This obviously is a great forum!

We are not using a split DNS because we figured we would not need it cause we are just using our public ip as the mail server.

Please bear with me, whereas this is all so new to me and I am trying to learn everything about zimbra, so a lot of the language I might not fully understand.

Can all these settings be accomplished in the Admin GUI? And if not, could you point me to a wiki or something that describes how to do this? Cause you mention 'modify mynetworks settings', but not sure what manner to do this.

Like I mentioned earlier, zimbra is working fine on its own, it is just with Outlook that I am having issues. And once again I apologize if my lack of knowledge is frustrating for you....trust me, I know what that feels like.

OK, your description helps - leave the mynetworks setting for the moment. You need to set-up your Outlook client (I assume you're using IMAP?) to send mail via the Zimbra server using port 587 and that connection needs to be authenticated with the user details account and password - that should be sufficient for the client to send email.

Spoke too soon. Two of the machines inside the network are not sending. However the gateway on these two machines are different. They are using a separate isp. If I know the ip they are sending from (the public), how can I add it to the safe list of ip(s)?

Spoke too soon. Two of the machines inside the network are not sending. However the gateway on these two machines are different. They are using a separate isp. If I know the ip they are sending from (the public), how can I add it to the safe list of ip(s)?

That shouldn't make any difference, if they connect to the server and authenticate against it then they should be able to send email. You say they 'can't send' but do they receive email OK? Get them to try sending an email and have a look (or tail the log) in the log files and see what errors you get.

You should not, under any circumstances, add a user IP to the Trusted Networks - if they get compromised you've just allowed them to relay mail through your server unhindered and you'll get the server blacklisted.

You can mark a thread as 'solved' from the Thread Tools drop down at the top of this page..

Phoenix,
No they can not even receive emails as well. Let me describe the network more in detail, then I think you will see what I am talking about.

The network guy made it so a section of computers can set their gateway and use one of our isp providers and if you set your gateway to the other gateway ip address, it allows you to use our other service provider.

The public ip address to our mailserver is 75.149.178.250 with local machines using 10.1.10.3 to 10.1.10.20. However those machines within that range also have the ability to switch ips by changing their gateway settings, like I mentioned above.

When I got on one of the machines that is not working and did a whatismyip I got back 99.140.23.104, which I know is the ip for that network.

Right now in my Servers MTA I have this setting 127.0.0.0/8 75.149.178.0/24 10.1.10.0/24

Is that the way it should be? I added the 10.1.10.0/24 to allow for local connection, but not sure if I needed it.

Also, wouldn't I want to add that 99.140.23.104 ip so that mailserver would recognize them as well?

I checked the log files and do not see any reference to my trying to connect on the machines that will NOT connect.